Posthole auger



Sept. 13 1927. 1,642,647

A. C. COGER POSTHOLE AUGER Filed Nov. 18 1925 A3 Q A? v A? v fl/Zer/ a 6mm ATTORN EY Patented Sept. 13, 1927.

PATENT OFFICE.

ALBERT C. COGER, OF DUNBAR, NEBRASKA.

POSTHOLE AUGER.

Application filed November My invention relates to improvements in post hole angers.

One object of the invention is to provide an auger which may be adjusted for drilling holes of different sizes.

Another object is to arrange the adjusting means for the blades so that tapered holes may be bored as for instance, where it is desired that the hole be larger atthe top than at. the bottom.

A further'advantage is an extensible handle to provide for drilling to different depths.

With the above and other objects in View, the invention consists of certain novel features and construction and arrangement of 7 parts as will be more fully described in the following detail description of my specification embodiment of the invention.

In the accompanying drawings forming a part of this specification and in which like numerals of reference indicate similar parts 2 Figure 1 is a side elevation of the auger.

Figure 2 is a section on line 2-2 of Figure 1, and

Figure 3 is a section on line 33 of Figure 2.

In detail v The auger comprises a handle 1 consisting of interjecting sectionsythe upper end of each section being provided with a square recess 2, into which fits a squared depending project-ion 3 of the next section, the handle sect-ions being secured in place by setscrews 4. The top piece 5 is provided with a cross bar 6 for turning'the auger.

The lower end 7 of the handle is flattened as shown and secured adjacent the upper end of an outer curved blade 11 having a bit blade 12 inclined downwardly as clear- Serial No. 69,904.

ly shown in Figure 3 and provided with a sharp cutting edge 13.

' degree as the outer blade 11 and is adjust ably fixed to said outer blade as at 8 through the medium of receiving bolts 9 having flat heads 10 countersunk in holes disposed in the outer blade 11. The inner blade 14 is slotted as shown at 15 and 16 to accommodate the shanks of the bolts 9 and at the lower end of the inner blade 14 is a dirt lifter 17.

Due to the adjustability of the respective blades with respect to each other, holes of different diameters may be drilled as will be readily apparent upon inspection of Fig ure 2 of the drawings. It will be further observed that the inner blade 14 may be ad justcd at an angle with respect to the outer blade so that holes of a larger diameter at the top than at the bottom may be drilled.

WVhat I claim is: I

A post hole auger of the character described comprising a pair of telescopically mounted blades, a bit blade inclined downwardly from one of said blades with the sharp cutting edge formed thereon; a. dirt lifter inclined from the other of said blades, and said blades being adjustably associated with respect to each other a handle rising from one of said blades and including detachable sections provided with recesses, and projections also provided on said sections and adapted to be received in said recesses whereby the length of the handlfe may be varied for boring holes of different de t-hs.

n testimony whereof I afiix my signature.

ALBERT C. COGER. 

